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  2. Length contraction - Wikipedia

    en.wikipedia.org/wiki/Length_contraction

    Length contraction is the phenomenon that a moving object's length is measured to be shorter than its proper length, which is the length as measured in the object's own rest frame. [1] It is also known as Lorentz contraction or Lorentz–FitzGerald contraction (after Hendrik Lorentz and George Francis FitzGerald ) and is usually only noticeable ...

  3. Tests of special relativity - Wikipedia

    en.wikipedia.org/wiki/Tests_of_special_relativity

    RMS has three testable parameters with respect to length contraction and time dilation. From that, any anisotropy of the speed of light can be assessed. On the other hand, SME includes many Lorentz violation parameters, not only for special relativity, but for the Standard model and General relativity as well; thus it has a much larger number ...

  4. List of relativistic equations - Wikipedia

    en.wikipedia.org/wiki/List_of_relativistic_equations

    Lorentz factor. {\displaystyle \gamma = {\frac {1} {\sqrt {1-\beta ^ {2}}}}} where and v is the relative velocity between two inertial frames. For two frames at rest, γ = 1, and increases with relative velocity between the two inertial frames. As the relative velocity approaches the speed of light, γ → ∞. Time dilation (different times t ...

  5. Bell's spaceship paradox - Wikipedia

    en.wikipedia.org/wiki/Bell's_spaceship_paradox

    Below: In S′ the distance between the spaceships increases, while the string length stays the same. Bell's spaceship paradox is a thought experiment in special relativity. It was first described by E. Dewan and M. Beran in 1959 [1] but became more widely known after John Stewart Bell elaborated the idea further in 1976. [2]

  6. Derivations of the Lorentz transformations - Wikipedia

    en.wikipedia.org/wiki/Derivations_of_the_Lorentz...

    Spacetime. There are many ways to derive the Lorentz transformations using a variety of physical principles, ranging from Maxwell's equations to Einstein's postulates of special relativity, and mathematical tools, spanning from elementary algebra and hyperbolic functions, to linear algebra and group theory.

  7. Kennedy–Thorndike experiment - Wikipedia

    en.wikipedia.org/wiki/Kennedy–Thorndike_experiment

    The Kennedy–Thorndike experiment. The Kennedy–Thorndike experiment, first conducted in 1932 by Roy J. Kennedy and Edward M. Thorndike, is a modified form of the Michelson–Morley experimental procedure, testing special relativity. [1] The modification is to make one arm of the classical Michelson–Morley (MM) apparatus shorter than the ...

  8. Formulations of special relativity - Wikipedia

    en.wikipedia.org/wiki/Formulations_of_special...

    Einstein's two postulates. As formulated by Albert Einstein in 1905, the theory of special relativity was based on two main postulates: The principle of relativity: The form of a physical law is the same in any inertial frame (a frame of reference that is not accelerating in any direction). The speed of light is constant: In all inertial frames ...

  9. Lorentz transformation - Wikipedia

    en.wikipedia.org/wiki/Lorentz_transformation

    In physics, the Lorentz transformations are a six-parameter family of linear transformations from a coordinate frame in spacetime to another frame that moves at a constant velocity relative to the former. The respective inverse transformation is then parameterized by the negative of this velocity. The transformations are named after the Dutch ...